<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="css/gb.css">
    <style>
        /* @media screen and (max-width: 1600px) {
            body {
                background-color: red;
            }
        }

        @media screen and (max-width: 900px) {
            body {
                background-color: #e91;
            }
        }

        @media screen and (max-width: 600px) {
            body {
                background-color: #013;
            }
        } */
    </style>
</head>

<body>
    <div>
        hllow word
    </div>
</body>

</html>